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Meaning of decuman

dec•u•man

Pronunciation: (dek'yoo-mun), [key]
— adj.
  1. large or immense, as a wave.
  2. (in ancient Rome) of or pertaining to the tenth cohort of a legion.
—n.
  1. Also called(in ancient Rome) the main gate of a military camp, facing away from the enemy and near which the tenth cohort of the legion was usually stationed.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.